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Investments In Securities (Schedule Of Gross Unrealized Gains And Losses And Amortized Cost For Securities) (Details)
$ in Thousands
6 Months Ended
Jun. 30, 2019
USD ($)
Jun. 30, 2018
USD ($)
Dec. 31, 2018
USD ($)
Debt and Equity Securities, FV-NI [Line Items]      
Fixed maturities, available-for-sale, amortized cost $ 82,647   $ 87,714
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities 0 $ 0  
Government obligations      
Debt and Equity Securities, FV-NI [Line Items]      
Fixed maturities, available-for-sale, amortized cost 1,013   1,023
Available-for-sale, at fair value, Gross Unrealized Gains 0   0
Available-for-sale, at fair value, Gross Unrealized Losses 1   7
Available-for-sale, at fair value, Estimated Fair Value 1,012   1,016
General Obligations Of U.S. States, Territories And Political Subdivisions      
Debt and Equity Securities, FV-NI [Line Items]      
Fixed maturities, available-for-sale, amortized cost 20,007   19,518
Available-for-sale, at fair value, Gross Unrealized Gains 756   229
Available-for-sale, at fair value, Gross Unrealized Losses 0   143
Available-for-sale, at fair value, Estimated Fair Value 20,763   19,604
Special Revenue Obligations Of U.S. States, Territories And Political Subdivisions      
Debt and Equity Securities, FV-NI [Line Items]      
Fixed maturities, available-for-sale, amortized cost 52,626   56,675
Available-for-sale, at fair value, Gross Unrealized Gains 2,361   1,237
Available-for-sale, at fair value, Gross Unrealized Losses 18   329
Available-for-sale, at fair value, Estimated Fair Value $ 54,969   $ 57,583
Number of Special Revenue Bonds 60   60
Corporate Debt Securities      
Debt and Equity Securities, FV-NI [Line Items]      
Fixed maturities, available-for-sale, amortized cost $ 9,001   $ 10,498
Available-for-sale, at fair value, Gross Unrealized Gains 565   303
Available-for-sale, at fair value, Gross Unrealized Losses 4   47
Available-for-sale, at fair value, Estimated Fair Value 9,562   10,754
Total Fixed Maturities      
Debt and Equity Securities, FV-NI [Line Items]      
Fixed maturities, available-for-sale, amortized cost 82,647   87,714
Available-for-sale, at fair value, Gross Unrealized Gains 3,682   1,769
Available-for-sale, at fair value, Gross Unrealized Losses 23   526
Available-for-sale, at fair value, Estimated Fair Value $ 86,306   $ 88,957